Energy storage system and monitoring apparatus for same

An energy storage system, comprising a monitoring apparatus for the energy storage system, wherein the monitoring apparatus comprises:

• a plurality of monitors, each of the plurality of monitors being configured to sample an input electrical signal and/or an output electrical signal of one energy storage device and determine an operating parameter of the corresponding energy storage device based on the input electrical signal and/or the output electrical signal, and each of the plurality of monitors supporting a wireless networking mode;
• and
• a display terminal configured to perform a wireless communication with an upper computer, and transmit the operating parameter of the corresponding energy storage device to the upper computer by performing a wireless communication with each of the plurality of monitors when each of the plurality of monitors operates in the wireless networking mode, to allow the upper computer to display the operating parameter of the corresponding energy storage device,
• wherein each of a plurality of energy storage devices comprises a photovoltaic module, a solar charging controller, a battery, and an inverter, and each of the plurality of monitors comprises:
• a photovoltaic monitor arranged between the photovoltaic module and the solar charging controller, and configured to:
• sample an output electrical signal of the photovoltaic module and an input electrical signal of the solar charging controller, determine a current value, a voltage value, a power, and power generation of the photovoltaic module based on the output electrical signal of the photovoltaic module and the input electrical signal of the solar charging controller, and perform an on-off control on a circuit between the photovoltaic module and the solar charging controller;
• a direct current (DC) load monitor arranged between a DC source and a DC load of the energy storage system, and configured to:
• sample an output electrical signal of the DC source and an input electrical signal of the DC load, determine a power and power consumption of the DC load based on the output electrical signal of the DC source and the input electrical signal of the DC load, perform an on-off control on a circuit between the DC source and the DC load, and perform overcurrent protection based on the output electrical signal of the DC source and the input electrical signal of the DC load;
• an alternating current (AC) load monitor arranged between the inverter and an AC load of the energy storage system, and configured to:
• sample an output electrical signal of the inverter and an input electrical signal of the AC load, determine a power and power consumption of the AC load based on the output electrical signal of the inverter and the input electrical signal of the AC load, perform an on-off control of a circuit between the inverter and the AC load, and perform overcurrent protection and leakage protection based on the output electrical signal of the inverter and the input electrical signal of the AC load;
• and
• a battery monitor adapted to be connected to the battery, and configured to:
• sample an input electrical signal of the battery and an output electrical signal of the battery, and determine a power, a residual capacity, an actual capacity, and a health state of the battery based on the input electrical signal of the battery and the output electrical signal of the battery.